# Astromee vs Delta Number Deduce

Astromee and Delta Number Deduce are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Astromee ships an update every 3 weeks, Delta Number Deduce every 2 weeks. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Astromee | Delta Number Deduce |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 69 MB | 16 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Kishore Sharma](https://appshunter.io/developer/1877821815) | [Willa Balingit](https://appshunter.io/developer/6809697251) |

## What reviewers say

### Astromee

[App page](https://appshunter.io/ios/app/astromee/id6759275385)

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

**In-app purchases:** none


### Delta Number Deduce

[App page](https://appshunter.io/ios/app/delta-number-deduce/id6809697249)

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

**In-app purchases:** none


## Frequently asked questions

### Is Astromee free?

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

### Is Delta Number Deduce free?

Delta Number Deduce is free to download, with no in-app purchases.

### Do Astromee or Delta Number Deduce have ads?

Neither Astromee nor Delta Number Deduce shows ads.

### Which is updated more often, Astromee or Delta Number Deduce?

Astromee ships an update every 3 weeks, and Delta Number Deduce every 2 weeks. Most recently, Astromee was updated on October 17, 2026 and Delta Number Deduce on October 16, 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.*