# Nerdie vs Stellary

The clearest difference is update cadence: Nerdie at every 10 days against Stellary's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Nerdie sells 1 in-app purchase, starting at $12.99 per year and Stellary sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Nerdie ships an update every 10 days, Stellary every 6 weeks. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Nerdie | Stellary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 6 weeks |
| Size | 47 MB | 101 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HALIL AHMET CENGELOGLU](https://appshunter.io/developer/1863259309) | [HAKAN MATTIAS BJORN OLANDERSSON](https://appshunter.io/developer/6788922960) |

## What reviewers say

### Nerdie

[App page](https://appshunter.io/ios/app/nerdie-book-tracker/id6787246760)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nerdie Premium Yearly | $12.99 | per year |


### Stellary

[App page](https://appshunter.io/ios/app/stellary-reading-tracker/id6788922958)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stellary Infinite | $3.99 | per month |
| Stellary Infinite | $19.99 | per 6 months |
| Stellary Infinite | $29.99 | per year |


## Frequently asked questions

### Is Nerdie free?

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

### Is Stellary free?

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

### Do Nerdie or Stellary have ads?

Neither Nerdie nor Stellary shows ads.

### Which is updated more often, Nerdie or Stellary?

Nerdie ships an update every 10 days, and Stellary every 6 weeks. Most recently, Nerdie was updated on October 15, 2026 and Stellary on October 7, 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.*