# AI Calculator & Math Solver vs 2FA Authenticator・OTP Authy

The clearest difference is rating: AI Calculator & Math Solver at 5.0 against 2FA Authenticator・OTP Authy's 3.6. AI Calculator & Math Solver also leads on monetization model (free with in-app purchases vs subscription) and update cadence (weekly vs fortnightly). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. AI Calculator & Math Solver sells 3 in-app purchases, starting at $4.99 per 7 days and 2FA Authenticator・OTP Authy sells 6 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

AI Calculator & Math Solver holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 5 and 5 respectively.

AI Calculator & Math Solver ships an update weekly, 2FA Authenticator・OTP Authy fortnightly. The most recent releases landed on September 10, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | AI Calculator & Math Solver | 2FA Authenticator・OTP Authy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ai-calculator-and-math-solver/id6743431046/reviews)** | [3.6 (5 ratings)](https://appshunter.io/ios/app/2fa-authenticatorotp-authy/id6751800442/reviews) |
| Number of ratings | 5 | 5 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 30 MB | 48 MB |
| Requires iOS | 18.2 | **17.6** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lori Nguyen](https://appshunter.io/developer/1872689629) | [Dritan Kola](https://appshunter.io/developer/1850538867) |

## What reviewers say

### AI Calculator & Math Solver

[App page](https://appshunter.io/ios/app/ai-calculator-and-math-solver/id6743431046)

This app offers instant math solutions with step-by-step explanations for various math problems, from basic arithmetic to calculus. It features AI-powered recognition of handwritten and typed equations, a scanner, graphing capabilities, and unit conversion.

**Highlights:** Instant math solutions, Step-by-step explanations, AI-powered problem solving, Equation scanner, Graphing calculator, Unit & currency converter

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Solver PRO (weekly) | $4.99 | per 7 days |
| Solver PRO (monthly) | $12.99 | per month |
| Solver PRO (yearly) | $39.99 | per year |


### 2FA Authenticator・OTP Authy

[App page](https://appshunter.io/ios/app/2fa-authenticatorotp-authy/id6751800442)

This app generates one-time passwords for two-factor authentication, helping to secure your online accounts. It supports multiple services and works offline, offering a user-friendly interface for easy management of your security codes.

**Highlights:** Generate one-time passwords, Support for multiple accounts, Offline functionality, Secure backup and restore, User-friendly interface

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2FA Authenticator・OTP Authy | $5.99 | per 7 days |
| 2FA Authenticator・OTP Authy | $5.99 | per 7 days |
| 2FA Authenticator・OTP Authy | $7.99 | per 7 days |
| 2FA Authenticator・OTP Authy | $9.99 | per 7 days |
| 2FA Authenticator・OTP Authy | $19.99 | per month |
| 2FA Authenticator・OTP Authy | $39.99 | per year |


## Frequently asked questions

### Is AI Calculator & Math Solver free?

AI Calculator & Math Solver is free to download, with in-app purchases available.

### Is 2FA Authenticator・OTP Authy free?

2FA Authenticator・OTP Authy is free to download, with in-app purchases available.

### Which has better reviews, AI Calculator & Math Solver or 2FA Authenticator・OTP Authy?

AI Calculator & Math Solver is rated higher. AI Calculator & Math Solver averages 5.0 out of 5 from 5 ratings, while 2FA Authenticator・OTP Authy averages 3.6 from 5 ratings.

### Do AI Calculator & Math Solver or 2FA Authenticator・OTP Authy have ads?

Neither AI Calculator & Math Solver nor 2FA Authenticator・OTP Authy shows ads.

### Which is updated more often, AI Calculator & Math Solver or 2FA Authenticator・OTP Authy?

AI Calculator & Math Solver ships an update weekly, and 2FA Authenticator・OTP Authy fortnightly. Most recently, AI Calculator & Math Solver was updated on September 10, 2026 and 2FA Authenticator・OTP Authy on September 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.*