99esim and Holafly take opposite approaches to the same product category. One sells sized data plans at a per-GB rate; the other sells unlimited-only plans priced per day. The right pick depends entirely on your data usage and whether you need hotspot.

Drawing from the full 99esim review and the full Holafly review, here's where each genuinely fits.

The fast version

Pick 99esim if: you're a moderate user (most travelers), you need hotspot for a laptop or shared device, you're traveling with family or a group, your trip is over 2 weeks, you care about price, you want plan flexibility, or you're heading to mainland China.

Pick Holafly if: you're a heavy-use traveler (content creator uploading daily, streaming on cellular for hours, constant video calls), you specifically don't want to think about data caps, you're a Spanish-or-Portuguese-first speaker who values native-language support, or you're on a short trip where peace-of-mind matters more than price.

For most leisure travelers, 99esim is the right default. For one specific user shape, Holafly works.

Plan structure: the entire difference

This is where the two providers diverge structurally.

99esim sells:

  • Fixed bundles (1 GB / 7 days, 3 GB / 10 days, 5 GB / 15 days, etc.) — the standard grid most travel eSIMs use
  • Custom plans where you pick data amount and duration independently
  • Group eSIMs across up to 4 devices on a shared pool
  • Gift eSIMs you can send to others

Holafly sells:

  • Unlimited-only plans (no GB tiers)
  • Priced per day (1 day, 5 days, 7 days, 15 days, 30 days)
  • No group plans
  • No gift functionality

For travelers whose usage is bounded (most travelers — 5-10 GB per week), 99esim's sized plans cost less for the same usage. For travelers who genuinely use unlimited capacity (content creators, streamers), Holafly's structure removes meter anxiety.

Pricing: the value math

Concrete comparison for a 7-day trip with moderate usage:

  • 99esim 5 GB / 7 days: typically €5-10 in popular destinations. Covers maps, social, messaging, occasional video calls with margin.
  • Holafly unlimited 7 days: typically $27 in popular destinations. Covers everything but the user often won't use most of it.

The price gap is roughly 2-3x for moderate users. For a one-time trip the gap is small in absolute terms; over multiple trips it adds up.

For heavy users (15+ GB / week — content creators, streamers, video-call-heavy work):

  • 99esim larger plans (15-25 GB) or unlimited tiers: comparable to Holafly pricing
  • Holafly unlimited: purpose-built for this usage shape

The break-even point is roughly 15 GB / week. Below that, 99esim wins on price. Above that, Holafly's unlimited starts making sense.

For a month-long stay:

  • 99esim 30-day sized plan: typically €10-25
  • Holafly 30-day unlimited: $80-90+

The gap widens at long durations. For nomads and extended-stay travelers, 99esim is meaningfully cheaper.

Hotspot: where Holafly genuinely fails for some users

This is the most concrete functional difference:

99esim: hotspot allowed on most plans without separate caps. The hotspot data comes from the plan's main pool — if you have 10 GB total, you can use it across phone and tethered device. Cheap starter plans (1 GB) sometimes restrict hotspot; mid-size and larger plans don't.

Holafly: hotspot is disabled or restricted on most plans. Even on unlimited tiers, you typically can't tether. For business travelers tethering a work laptop, digital nomads working remotely, or families sharing a single phone's connection — Holafly is the wrong tool.

For most leisure travelers using their phone alone, this doesn't matter. For anyone with a laptop or shared device, it's a deal-breaker.

Coverage: similar reach, different home turf

Both providers have global coverage with tier-1 carrier partners.

Holafly's strength: Latin America (the company is Spanish, with deep regional presence in Mexico, Argentina, Brazil, Colombia, Peru, Chile). Spanish-speaking markets generally are home turf.

99esim's strength: Europe + the Balkans (the home market — Pristina-based operations, direct carrier relationships in EU and Balkan markets). Plus mainland China, which Holafly doesn't typically cover.

For most popular destinations, the practical coverage is equivalent. For specific Latin American long-stay use, Holafly has marginal advantages. For European multi-country trips and China-inclusive itineraries, 99esim wins.

Support: minutes vs Spanish-language depth

99esim replies in minutes via in-app chat — among the fastest in the tracked set. Multilingual support across 19 web languages and 9 mobile-app languages.

Holafly has competent multilingual support with particular depth in Spanish, Portuguese, and a few other European languages. Response times are reasonable but typically slower than 99esim's minutes-not-hours target.

For Spanish-speaking travelers who specifically want native-language support, Holafly's depth is real value. For everyone else, 99esim's speed wins.

Group plans: not even close

99esim group eSIMs share one purchase across up to 4 devices at a discounted total rate. For a family of 4 or a friend group, this beats buying individual plans.

Holafly has no group option. Each device buys its own plan. For a family of 4, that's 4 separate Holafly purchases — and at unlimited-only pricing, the total cost is meaningful.

For families and travel groups, 99esim wins on this axis alone.

Gift eSIMs: another 99esim feature Holafly lacks

99esim lets you buy a plan and assign it to someone else's email or phone — useful for parents traveling, friends on separate trips, partners abroad. Holafly doesn't offer this.

For travelers who fit either family or gift use case, the feature gap matters.

Long stays: where Holafly's pricing structure breaks down

For stays over 2 weeks, Holafly's per-day pricing accumulates fast. 30 days at $80-90 is typical; 60 days approaches $160. Sized 99esim plans for the same duration run €10-50 depending on data needs.

For nomads, long-stay travelers, and anyone considering a month-plus trip, 99esim is the structurally right pick. Local prepaid SIMs bought in-country are usually even cheaper for stays in low-prepaid markets like Thailand or Mexico — but 99esim wins as the travel-eSIM option for long-stay use.

Who should pick 99esim

  • Moderate-use travelers (most travelers): sized plans cost less for the same usage.
  • Anyone who tethers a laptop for work, study, or shared use.
  • Families and travel groups sharing one plan.
  • Long-stay travelers (2+ weeks) where per-day Holafly pricing accumulates.
  • Mainland China visitors.
  • Cost-conscious travelers comparing total spend.
  • Multi-country trip planners who benefit from regional plans.
  • First-time travelers who want flexibility (custom plans) plus the option of fixed bundles.

Who should pick Holafly

  • Content creators uploading video to Instagram, TikTok, or YouTube daily.
  • Streaming-heavy travelers (Netflix, Twitch, YouTube on cellular for hours).
  • Video-call-heavy remote workers on shorter trips.
  • Travelers who genuinely don't want to think about data and accept the price premium.
  • Spanish-or-Portuguese-first speakers who value native-language customer support.
  • Latin America regional travelers where Holafly's home-turf strength applies.

Real-world scenarios

A few specific trip shapes show how the choice plays out in practice.

Scenario 1: One-week vacation in Spain. Couple traveling, light social media use, one hotspot session for a tablet on the train. Expected use: 4 GB total. 99esim sized plan: ~€5. Holafly unlimited 7 days: ~€27. The Holafly premium buys capacity that goes unused. 99esim wins by €22.

Scenario 2: Two-week content-creator trip in Mexico. Solo traveler uploading daily Instagram Reels and 30-minute YouTube videos, plus regular video calls home. Expected use: 30+ GB. 99esim larger plan or unlimited tier: ~€20-30. Holafly unlimited 15 days: ~$50. Comparable cost; Holafly's no-cap structure removes the throttle anxiety while uploading. Either works; Holafly is purpose-built.

Scenario 3: Month-long digital nomad stay in Buenos Aires. Remote worker tethering laptop 6 hours daily for client work. Expected use: 50+ GB on hotspot alone. Holafly: hotspot disabled — rules out completely. 99esim larger 30-day plan with hotspot: ~€20-30. 99esim is the only viable option of the two.

Scenario 4: Family of 4 on a Caribbean cruise. Parents and two kids, each with their own phone, sharing connectivity in port. 99esim group plan covers all 4 phones at a discounted total. Holafly: 4 separate unlimited plans at $27 each = $108 for the week. 99esim saves the family roughly $80.

Scenario 5: Spanish-speaking traveler doing a 5-day trip to Colombia. Native Spanish speaker, occasional moderate use, no tethering needs. Holafly's Spanish-language support is genuinely valuable; 99esim supports Spanish too via 19-language web app and 9-language mobile app. Both work. Pick on price or familiarity.

Scenario 6: Tokyo + Seoul business trip, 10 days. Hotspot for Slack and Zoom calls daily, moderate streaming during downtime. Expected use: 20-25 GB including hotspot. Holafly: hotspot restricted, rules out for laptop work. 99esim Asia regional plan with hotspot: covers both countries on one purchase. 99esim wins on the hotspot policy alone.

Final verdict

For most travelers' specific trip shapes — moderate usage, hotspot needs, multi-country routes, family groups, long stays — 99esim is the right pick. The pricing is meaningfully better for sized usage, the feature set is broader, and the hotspot policy is more permissive.

For one specific user shape — heavy unlimited usage, no hotspot needed, peace-of-mind over price — Holafly works.

Most travelers don't fit the second shape. Check your actual data usage from a recent trip; if it was under 15 GB per week, 99esim is the cheaper-and-better-featured choice.

For full provider details, see the 99esim review and Holafly review.

Browse 99esim plans to compare specific country pricing and plan sizing for your trip.