# eSquirrel vs reli.check!

The clearest difference is in-app purchases: reli.check! at none against eSquirrel's 50. reli.check! also leads on update cadence (every 5 days vs every 2 months) and iOS requirement (9.1 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. eSquirrel sells 50 one-off in-app purchases. reli.check! asks for nothing beyond the download.

eSquirrel ships an update every 2 months, reli.check! every 5 days. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | eSquirrel | reli.check! |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 60 MB | 34 MB |
| Requires iOS | 15.0 | **9.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [eSquirrel GmbH](https://appshunter.io/developer/987611199) | [Fluxguide Ausstellungssysteme GmbH](https://appshunter.io/developer/794336453) |

## What reviewers say

### eSquirrel

[App page](https://appshunter.io/ios/app/esquirrel/id987611200)

This app offers a gamified learning experience for students and employees. It uses spaced repetition and quests to help users memorize information and prepare for exams or workplace training. Users can earn acorns and progress through levels by answering quiz questions correctly.

**Highlights:** Gamified learning with quests and acorns, Spaced repetition for long-term memory, Mobile-optimized quiz questions, Progress tracking and level progression, Ranking lists for competitive learning, Tailored learning materials for subjects and exams

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (50)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Finanzielle Entscheidungen treffen | Free | one-time |
| eSquirrel in a nutshell | Free | one-time |
| Englisch Vocabulary for MORE!1 | Free | one-time |
| Digitale Grundbildung 1 | Free | one-time |
| LSL: Lebensmittelverschwendung | Free | one-time |
| Die Welt der Geometrie 2 | $4.99 | one-time |
| Ausdrucksweisen des Glaubens | $4.99 | one-time |
| Religiöse Symbole und Bilder | $6.99 | one-time |
| Schreibfix 4 Lebendige Sprache | $12.99 | one-time |
| BioTOP 1 (öbv) | $12.99 | one-time |
| Durchstarten Mathematik 1 | $12.99 | one-time |
| Starke Seiten Deutsch 1 (ÖBV) | $12.99 | one-time |
| einfach bio 1 (ÖBV) | $12.99 | one-time |
| Vitae 3 (Lemberger) | $12.99 | one-time |
| English Practice for MORE! 1 | $14.99 | one-time |
| English Practice for MORE! 2 | $14.99 | one-time |
| English Practice for MORE! 3 | $14.99 | one-time |
| Genial! Mathematik 4 B/M | $14.99 | one-time |
| English Practice for MORE! 4 | $14.99 | one-time |
| Break it Kids - Englisch lernen | $14.99 | one-time |
| MyNEWS - Digitale Themenplattform | $14.99 | one-time |
| Digitale Grundbildung 1 | $14.99 | one-time |
| Englisch Vocabulary for MORE!3 | $14.99 | one-time |
| big bang 3 (öbv) | $14.99 | one-time |
| Physik verstehen 3 (öbv) | $14.99 | one-time |
| einfach bio 3 (öbv) | $14.99 | one-time |
| Impuls Physik 3 (öbv) | $14.99 | one-time |
| Bildungs- & Berufsorientierung | $14.99 | one-time |
| Starke Seiten Deutsch 3 (ÖBV) | $14.99 | one-time |
| Genial! Mathematik 3 B/M | $14.99 | one-time |
| Genial! Deutsch 3 - Übungsteil | $14.99 | one-time |
| Englisch Vocabulary for MORE!2 | $14.99 | one-time |
| big bang 2 (öbv) | $14.99 | one-time |
| Durchstarten Mathematik 2 | $14.99 | one-time |
| Physik verstehen 2 (öbv) | $14.99 | one-time |
| Impuls Physik 2 (öbv) | $14.99 | one-time |
| Starke Seiten Deutsch 2 (ÖBV) | $14.99 | one-time |
| einfach bio 2 (ÖBV) | $14.99 | one-time |
| Genial! Mathematik 2 B/M | $14.99 | one-time |
| Genial! Deutsch 2 - Übungsteil | $14.99 | one-time |
| DAS Mathematikbuch 2 - ÜT | $14.99 | one-time |
| Vitae 4 (Lemberger) | $14.99 | one-time |
| La Pratica Rende Perfetti 1 | $17.99 | one-time |
| Nouvelles Perspectives A1 6-9 | $22.99 | one-time |
| SPANISCH A1A2:Nuevas Perspect. | $22.99 | one-time |
| SPANISCH A2+:Nuevas Perspect. | $22.99 | one-time |
| Vitae 6 (Lemberger) | $22.99 | one-time |
| Visang Korean Intermediate 1 | $44.99 | one-time |
| Visang korean intermediate 2 | $44.99 | one-time |
| Innere Medizin (Herold) | $89.99 | one-time |


### reli.check!

[App page](https://appshunter.io/ios/app/relicheck/id1425755616)

**In-app purchases:** none


## Frequently asked questions

### Is eSquirrel free?

eSquirrel is free to download, with in-app purchases available.

### Is reli.check! free?

reli.check! is free to download, with no in-app purchases.

### Do eSquirrel or reli.check! have ads?

Neither eSquirrel nor reli.check! shows ads.

### Which is updated more often, eSquirrel or reli.check!?

eSquirrel ships an update every 2 months, and reli.check! every 5 days. Most recently, eSquirrel was updated on October 9, 2026 and reli.check! on October 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*