# Lehrer Lämpel vs Gravity Math

The clearest difference is price: Lehrer Lämpel at $0.99 against Gravity Math's $2.99. Lehrer Lämpel also leads on iOS requirement (9.3 vs 12.0). Gravity Math's advantage is device support (3 vs 1). On update cadence, ads and in-app purchases there is nothing between them.

Lehrer Lämpel costs $0.99 and Gravity Math $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Lehrer Lämpel ships an update every 12 months, Gravity Math every 7 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Lehrer Lämpel | Gravity Math |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 7 months** |
| Size | 7 MB | 17 MB |
| Requires iOS | **9.3** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Claus Zinn](https://appshunter.io/developer/889016868) | [Sergey Malugin](https://appshunter.io/developer/562782409) |

## What reviewers say

### Lehrer Lämpel

[App page](https://appshunter.io/ios/app/lehrer-lampel-fractions/id932955952)

**Features:** macOS Compatibility

**In-app purchases:** none


### Gravity Math

[App page](https://appshunter.io/ios/app/gravity-math/id1453330374)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lehrer Lämpel free?

Lehrer Lämpel costs $0.99, with no in-app purchases.

### Is Gravity Math free?

Gravity Math costs $2.99, with no in-app purchases.

### Do Lehrer Lämpel or Gravity Math have ads?

Neither Lehrer Lämpel nor Gravity Math shows ads.

### Which is updated more often, Lehrer Lämpel or Gravity Math?

Lehrer Lämpel ships an update every 12 months, and Gravity Math every 7 months. Most recently, Lehrer Lämpel was updated on October 26, 2026 and Gravity Math 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.*