# Letter Recognition vs TallyFlex

The clearest difference is review sentiment: TallyFlex at 64% against Letter Recognition's 0%. TallyFlex also leads on price (Free vs $19.99) and update cadence (every 2 weeks vs every 39 months). Letter Recognition's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 15.0). On ads there is nothing between them.

TallyFlex is free to download; Letter Recognition costs $19.99 up front. TallyFlex sells 2 in-app purchases, starting at $27.99 per month. Letter Recognition asks for nothing beyond the download.

Letter Recognition ships an update every 39 months, TallyFlex every 2 weeks. The most recent releases landed on June 7, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Letter Recognition | TallyFlex |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | — | **[4.3 (87 ratings)](https://appshunter.io/ios/app/tallyflex-aba-data-collection/id1531412972/reviews)** |
| Number of ratings | — | **87** |
| Positive reviews | 0.0% of reviews | **64.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 15 MB | 87 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yellow Door Ltd](https://appshunter.io/developer/992076525) | [TallyFlex LLC](https://appshunter.io/developer/1531412974) |

## What reviewers say

### Letter Recognition

[App page](https://appshunter.io/ios/app/letter-recognition-us/id1204809323)

This educational app helps children recognize letters by matching pairs of letter pebbles. It teaches letter names, sounds, and shapes through a memory game, with customizable settings for different learning levels. Designed to enhance early literacy skills, it offers a focused and engaging learning experience.

**Highlights:** Match uppercase and lowercase letters, Learn letter names and sounds, Customizable game difficulty, Focuses on visual and auditory learning, Supports early writing development, No ads or in-app purchases

**Features:** macOS Compatibility

**In-app purchases:** none


### TallyFlex

[App page](https://appshunter.io/ios/app/tallyflex-aba-data-collection/id1531412972)

This app replaces paper data sheets for behavioral data collection. It helps professionals like BCBAs and RBTs work faster and more accurately with clients in clinics, schools, and homes. It offers various tracking methods and secure data export for reports.

**Highlights:** Replace paper data sheets, Track ABC data, frequency, duration, latency, Automatic timers for interval recording, Task analysis and prompt codes, Track multiple behaviors simultaneously, Export data to PDF, CSV, XLSX, Works offline

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TallyFlex Solo Monthly | $27.99 | per month |
| Solo Yearly | $279.99 | per year |


## Frequently asked questions

### Is Letter Recognition free?

Letter Recognition costs $19.99, with no in-app purchases.

### Is TallyFlex free?

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

### Do Letter Recognition or TallyFlex have ads?

Neither Letter Recognition nor TallyFlex shows ads.

### Which is updated more often, Letter Recognition or TallyFlex?

Letter Recognition ships an update every 39 months, and TallyFlex every 2 weeks. Most recently, Letter Recognition was updated on June 7, 2026 and TallyFlex on September 24, 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.*