# Exponential Growth Decay PRO vs SA Geo

The clearest difference is review sentiment: SA Geo at 100% against Exponential Growth Decay PRO's 0%. SA Geo also leads on price (Free vs $1.99) and iOS requirement (11.0 vs 15.0). Exponential Growth Decay PRO's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 2 months). On ads and device support there is nothing between them.

SA Geo is free to download; Exponential Growth Decay PRO costs $1.99 up front. SA Geo sells 1 one-off in-app purchase. Exponential Growth Decay PRO asks for nothing beyond the download.

Exponential Growth Decay PRO ships an update monthly, SA Geo every 2 months. The most recent releases landed on November 10, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Exponential Growth Decay PRO | SA Geo |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sa-geo/id1669107523/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 180 MB | 139 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [Darren McNally](https://appshunter.io/developer/1435108864) |

## What reviewers say

### Exponential Growth Decay PRO

[App page](https://appshunter.io/ios/app/exponential-growth-decay-pro/id1662901853)

Calculate future values using exponential growth and decay functions. Input starting and resulting values, growth factor, rate, or percentage to find missing variables. Visualize results with graphs and infographics, with step-by-step solutions.

**Highlights:** Calculate growth factor, rate, or percentage, Step-by-step solution display, Graph visualization of functions, Infographic parameter explanation, History of calculations, Support for decimals, fractions, and negative values

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

**In-app purchases:** none


### SA Geo

[App page](https://appshunter.io/ios/app/sa-geo/id1669107523)

Explore the geography of South America through interactive activities. Learn about countries, capitals, national parks, and animals with engaging quizzes and challenges.

**Highlights:** Country identification, Capital city quizzes, National park exploration, Animal fact learning, Geography challenges, Grab Bag activity

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro | $1.99 | one-time |


## Frequently asked questions

### Is Exponential Growth Decay PRO free?

Exponential Growth Decay PRO costs $1.99, with no in-app purchases.

### Is SA Geo free?

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

### Do Exponential Growth Decay PRO or SA Geo have ads?

Neither Exponential Growth Decay PRO nor SA Geo shows ads.

### Which is updated more often, Exponential Growth Decay PRO or SA Geo?

Exponential Growth Decay PRO ships an update monthly, and SA Geo every 2 months. Most recently, Exponential Growth Decay PRO was updated on November 10, 2026 and SA Geo on October 30, 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.*