# Compound Interest Calc vs SRT INT

The clearest difference is in-app purchases: SRT INT at none against Compound Interest Calc's 1. SRT INT also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.6). Compound Interest Calc's advantage is ratings volume (6.7K vs 1). On price, rating, update cadence and device support there is nothing between them.

Both are free to download. Compound Interest Calc sells 1 one-off in-app purchase. SRT INT asks for nothing beyond the download.

SRT INT holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Compound Interest Calc has 6.7K ratings behind it against 1, so its average is the more settled of the two.

Compound Interest Calc ships an update every 3 months, SRT INT every 2 months. The most recent releases landed on October 21, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Compound Interest Calc | SRT INT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (6.7K ratings)](https://appshunter.io/ios/app/compound-interest-calc/id1509212588/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/srt-int/id1600503406/reviews)** |
| Number of ratings | **6.7K** | 1 |
| Positive reviews | 68.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 16 MB | 38 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dane Hankamer](https://appshunter.io/developer/1509095396) | [Schwab Retirement Technologies Inc.](https://appshunter.io/developer/1558174243) |

## What reviewers say

### Compound Interest Calc

[App page](https://appshunter.io/ios/app/compound-interest-calc/id1509212588)

Plan your financial future with a powerful compound interest calculator. It helps you visualize investment growth with periodic contributions and plan retirement withdrawals with inflation adjustments. Offers detailed breakdowns and interactive charts for informed financial decisions.

**Highlights:** Calculate investment growth with contributions, Plan retirement withdrawals with inflation, Interactive growth and depletion charts, Year-by-year detailed breakdowns, Real-time calculations, Works offline

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 🚀 Visually appealing
- 🚀 Helpful for financial planning
- 🚀 Powerful compound interest calculations
- 🚀 Intuitive interface

**What reviewers complain about**

- 🐛 Scaling issues on smaller devices
- 🐛 Inaccurate calculations in certain scenarios
- 🐛 Frequent ads disrupting user experience
- 🐛 Crashing and compatibility issues
- 🐛 Lack of customization options

**Reported bugs**

- Withdrawal calculations showing incorrect results
- App crashing on certain device models
- Scaling issues on iPad devices
- Compound interest calculations not accurate for weekly/monthly contributions

**Requested features**

- Add dividend calculation option
- Allow for daily compound interest calculations
- Implement a save/load feature to retain user inputs
- Add ability to input one-time lump sum contributions
- Provide inflation-adjusted withdrawal calculations


### SRT INT

[App page](https://appshunter.io/ios/app/srt-int/id1600503406)

Manage your retirement savings on the go. Securely access account details, track performance, and update investment choices. The app also offers educational resources and tools to forecast your retirement income.

**Highlights:** Biometric login, Check account balances and performance, Update investment elections, Secure document upload, Retirement income forecast, Educational videos, Manage beneficiaries

**In-app purchases:** none


## Frequently asked questions

### Is Compound Interest Calc free?

Compound Interest Calc is free to download, with in-app purchases available.

### Is SRT INT free?

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

### Which has better reviews, Compound Interest Calc or SRT INT?

SRT INT is rated higher. Compound Interest Calc averages 4.8 out of 5 from 6.7K ratings, while SRT INT averages 5.0 from 1 ratings.

### Do Compound Interest Calc or SRT INT have ads?

Compound Interest Calc shows ads; SRT INT does not.

### Which is updated more often, Compound Interest Calc or SRT INT?

Compound Interest Calc ships an update every 3 months, and SRT INT every 2 months. Most recently, Compound Interest Calc was updated on October 21, 2026 and SRT INT on October 2, 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.*