Comparison

TapSim vs KeepSim

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TapSim

Features
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TapSim: Travel eSIM & prepaid data plans with instant setup in supported countries. Buy data plans for local, regional, or global travel and get online without a physical SIM. Key features - Prepaid data plans (no contracts) - Install before you fly or after you land - Keep your physical SIM active for calls and texts - Coverage in 150+ countries and regions (availability varies by plan) - Data-only eSIM plans for travelers, nomads, and multi-country trips - Regional bundles including Balkan options - Multi-country plans for cross-border driving How it works 1. Open TapSim and choose a plan 2. Install the eSIM using the in-app instructions 3. Activate and connect (speed depends on local network coverage) Supported devices: Works with most eSIM-compatible phones (including iPhone, Samsung Galaxy, and Google Pixel).

About

KeepSim

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KeepSim helps you keep every important SIM, eSIM, and virtual phone number alive — a local-first tracker for numbers you can't afford to lose. Some numbers matter long after you stop using them daily — a 2FA SIM, a prepaid travel line, a backup work number, a virtual line you can't lose. Miss the keep-alive window once and reactivation becomes a multi-step headache. KeepSim puts every number in one panel so you see what needs attention before it's gone. HOW KEEPSIM HELPS YOU KEEP EVERY SIM ALIVE > One-tap actions you set up once Pre-configure SMS, call, or web actions per number. When a renewal window opens, launch from detail or a widget — iOS confirms before anything sends. > Home Screen + Lock Screen widgets, every size Home Screen small / medium / large, plus Lock Screen rectangular / circular / inline. Top-N at-risk numbers visible at a glance; tap to jump straight to that number — no "open the app first" step. Widgets refresh after every keep-alive. > The app icon itself changes (Pro) 5 dynamic app icon styles (Poker, Calendar, Solari, LCD, Classic SIM). The KeepSim icon on your Home Screen — not a widget — shows days left for your most urgent number. Glance and you know whether to act. > Mark a keep-alive complete in one tap After the SMS sends or the call ends, mark it done. KeepSim recalculates the next due date and refreshes widgets and app icon. > Masked display across every surface Numbers display partially masked across the list, detail, and widgets. Check status in public without exposing the full number. > Local-first, no number reselling, no auto-messaging Your data lives on your device, or in your own private iCloud account if you enable Pro sync. Every communication action goes through iOS so you confirm before sending. KeepSim never auto-sends SMS or auto-dials. BUILT FOR MULTI-NUMBER USERS • Track every SIM, eSIM, prepaid line, and virtual number in one panel • Set keep-alive cycles, due dates, and reminder timing • Sort by risk — the most urgent number is always on top • Interface in English, Chinese, Japanese, Korean, and more; light and dark mode WHAT YOU GET FREE Download and use, no sign-up, no contact list access: • Up to 2 numbers • Default Kairo SIM Objects theme (light / dark / Dynamic Type) • Reminder 3 days before due • 1 basic action per number (SMS / call / web) • All Home Screen + Lock Screen widget sizes • Masked display and local storage KEEPSIM PRO — ONE-TIME UNLOCK If you manage more than a couple of numbers, Pro covers the real workload: • Unlimited numbers — track as many as you carry • Multi-stage reminders — 7 days, 3 days, and 1 day before due • All themes — Mission Timer Cards, Aero Operations Ledger, Telecom Command Console, and more, syncing across app and widgets • 5 dynamic app icons — Poker, Calendar, Solari, LCD, Classic SIM. The KeepSim icon shows days left for your most urgent number, refreshing after each keep-alive • iCloud sync — keep your numbers consistent across iPhones and iPads via your own iCloud; KeepSim's servers never see your data One-time purchase. Restore Purchases works on new devices. No subscription, no auto-renewal. WHAT KEEPSIM DOESN'T DO Clear boundaries, no surprises: • We don't sell or trade phone numbers • We don't provide carrier service or manage your carrier account • We don't auto-send SMS or auto-dial — every action requires your confirmation through iOS • We don't upload your numbers to our servers; data lives on your device or your private iCloud • We don't track you, we don't include ad SDKs, we don't read your contacts WHO KEEPSIM IS FOR • Students abroad and people working across borders • People holding on to a home-country SIM, a travel eSIM, or a prepaid line they can't afford to lose • Multi-line workers juggling work, backup, and virtual numbers • Anyone with a 2FA-only number that must stay alive Keep every number alive before it slips off your radar.

Screenshots

TapSim4 screens
KeepSim4 screens

Verdict

The call

The clearest difference is in-app purchases: TapSim at none against KeepSim's 1. TapSim also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. KeepSim sells 1 one-off in-app purchase. TapSim asks for nothing beyond the download.

Scorecard3 real differences · 3 level
TapSim versus KeepSim: the parameters behind the verdict, then further details
ParameterTapSimKeepSim
PriceFreeFree
Update frequency—Every 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size33 MB62 MB
Age rating4+4+
DeveloperMIDL GROUP LLP洋 闵

In-app purchases

None

TapSim

No in-app purchases

1 purchases

KeepSim

One-time1
  • KeepSim Pro$4.99

Questions

Is TapSim free?
TapSim is free to download, with no in-app purchases.
Is KeepSim free?
KeepSim is free to download, with in-app purchases available.
Do TapSim or KeepSim have ads?
Neither TapSim nor KeepSim shows ads.

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