# Cosmo Teacher vs FluencyCalc

The clearest difference is in-app purchases: Cosmo Teacher at none against FluencyCalc's 3. Cosmo Teacher also leads on ratings volume (34 vs 4) and iOS requirement (15.0 vs 17.0). FluencyCalc's advantage is rating (5.0 vs 4.6) and update cadence (every 2 weeks vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. FluencyCalc sells 3 in-app purchases, starting at $1.99 per month. Cosmo Teacher asks for nothing beyond the download.

FluencyCalc holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Cosmo Teacher has 34 ratings behind it against 4, so its average is the more settled of the two.

Cosmo Teacher ships an update every 5 weeks, FluencyCalc every 2 weeks. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Cosmo Teacher | FluencyCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (34 ratings)](https://appshunter.io/ios/app/cosmo-teacher/id6466263885/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/fluencycalc-running-record/id6792449311/reviews)** |
| Number of ratings | **34** | 4 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 318 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Algorithm of Learning Inc.](https://appshunter.io/developer/1787524245) | [Neobile LLC](https://appshunter.io/developer/1080490647) |

## What reviewers say

### Cosmo Teacher

[App page](https://appshunter.io/ios/app/cosmo-teacher/id6466263885)

Manage your teaching schedule, bookings, and class preparations on the go. This app allows you to easily reschedule or cancel classes and update your availability directly from your mobile device.

**Highlights:** Check bookings, Reschedule classes, Cancel classes, Update schedule, Prepare for classes

**In-app purchases:** none


### FluencyCalc

[App page](https://appshunter.io/ios/app/fluencycalc-running-record/id6792449311)

Instantly calculate oral reading fluency scores like WCPM, accuracy, and error ratios. Designed for K-5 educators, this app allows live tap-marking of miscues and provides detailed student progress tracking. All data is kept private on the device.

**Highlights:** Live tap-marking of errors and self-corrections, Instant calculation of WCPM, accuracy, and error ratios, Supports two assessment conventions (ORF/WCPM and Running Record), Student profiles with saved history and trend charts, PDF assessment reports and CSV export, Private by design with no accounts or analytics

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $4.99 | per year |
| Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Cosmo Teacher free?

Cosmo Teacher is free to download, with no in-app purchases.

### Is FluencyCalc free?

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

### Which has better reviews, Cosmo Teacher or FluencyCalc?

FluencyCalc is rated higher. Cosmo Teacher averages 4.6 out of 5 from 34 ratings, while FluencyCalc averages 5.0 from 4 ratings.

### Do Cosmo Teacher or FluencyCalc have ads?

Neither Cosmo Teacher nor FluencyCalc shows ads.

### Which is updated more often, Cosmo Teacher or FluencyCalc?

Cosmo Teacher ships an update every 5 weeks, and FluencyCalc every 2 weeks. Most recently, Cosmo Teacher was updated on October 30, 2026 and FluencyCalc on October 29, 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.*