# ePrescience vs SOLID Architecture

The clearest difference is update cadence: ePrescience at every 2 days against SOLID Architecture's every 9 days. SOLID Architecture's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ePrescience sells 2 in-app purchases, starting at $14.99 per month and SOLID Architecture sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ePrescience ships an update every 2 days, SOLID Architecture every 9 days. The most recent releases landed on September 22, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ePrescience | SOLID Architecture |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/eprescience/id6748284897/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 9 days |
| Monetization | Freemium | — |
| Size | 66 MB | 94 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rory Monaghan](https://appshunter.io/developer/1823159578) | [Airton Siqueira de Freitas](https://appshunter.io/developer/1809776051) |

## What reviewers say

### ePrescience

[App page](https://appshunter.io/ios/app/eprescience/id6748284897)

An AI-powered study companion that transforms notes into flashcards, generates audio summaries, and solves problems with step-by-step solutions. Chat with an AI tutor and focus with study soundscapes.

**Highlights:** AI-powered notes and flashcards, Audio summaries from notes, Step-by-step problem solver, AI tutor chat, Study soundscapes, Cross-device sync

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VerbaLearn Premium Monthly | $14.99 | per month |
| ePrescience Premium Annual | $149.99 | per year |


### SOLID Architecture

[App page](https://appshunter.io/ios/app/solid-architecture/id6755614891)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CERTIFICATE OF COMPLETION | $2.99 | one-time |
| Premium access | $4.99 | one-time |
| FULL PASS ALL APPS | $17.99 | one-time |


## Frequently asked questions

### Is ePrescience free?

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

### Is SOLID Architecture free?

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

### Do ePrescience or SOLID Architecture have ads?

Neither ePrescience nor SOLID Architecture shows ads.

### Which is updated more often, ePrescience or SOLID Architecture?

ePrescience ships an update every 2 days, and SOLID Architecture every 9 days. Most recently, ePrescience was updated on September 22, 2026 and SOLID Architecture on October 6, 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.*