# All Formulas app vs BidNote

The clearest difference is price: BidNote at Free against All Formulas app's $0.99. BidNote also leads on rating (4.8 vs 4.3) and update cadence (weekly vs every 3 months). All Formulas app's advantage is in-app purchases (none vs 10) and ratings volume (12 vs 4). On review sentiment, ads, device support and iOS requirement there is nothing between them.

BidNote is free to download; All Formulas app costs $0.99 up front. BidNote sells 10 one-off in-app purchases. All Formulas app asks for nothing beyond the download.

BidNote holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 12 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

All Formulas app ships an update every 3 months, BidNote weekly. The most recent releases landed on September 11, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | All Formulas app | BidNote |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.3 (12 ratings)](https://appshunter.io/ios/app/all-formulas-app/id1534734374/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/bidnote-learn-create-earn/id1669999803/reviews)** |
| Number of ratings | **12** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 23 MB | 17 MB |
| Requires iOS | **13.0** | 14.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Ranjeet Kumar](https://appshunter.io/developer/1476822683) | [Gavin Wolfe](https://appshunter.io/developer/1289105620) |

## What reviewers say

### All Formulas app

[App page](https://appshunter.io/ios/app/all-formulas-app/id1534734374)

Access a vast library of over 1000 formulas across math, physics, and chemistry. This app is designed for students and professionals needing quick, easy access to essential scientific and mathematical equations. Features include a user-friendly interface, offline access, and regular updates.

**Highlights:** Over 1000+ formulas, Math, physics, chemistry coverage, User-friendly interface, Easy-to-use search, Offline access, Regularly updated

**Features:** Vision Pro support

**In-app purchases:** none


### BidNote

[App page](https://appshunter.io/ios/app/bidnote-learn-create-earn/id1669999803)

This platform offers educational materials and tutoring services tailored to specific college courses. Educators can create and sell content or offer tutoring, earning commissions through PayPal Payouts. It aims to provide a more effective and curated learning experience.

**Highlights:** Course-specific educational materials, Handwritten and typed content, Video lessons, Asynchronous tutoring, Document scanning, PayPal/Venmo commission payouts, Content review for fraud prevention

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tier 2 Tutoring or Material | $1.99 | one-time |
| Tier 3 Tutoring or Material | $2.99 | one-time |
| Tier 4 Tutoring or Material | $3.99 | one-time |
| Tier 5 Tutoring or Material | $4.99 | one-time |
| Tier 6 Tutoring or Material | $5.99 | one-time |
| Tier 8 Tutoring or Material | $7.99 | one-time |
| Tier 10 Tutoring or Material | $9.99 | one-time |
| Tier 13 Tutoring or Material | $12.99 | one-time |
| Tier 15 Tutoring or Material | $14.99 | one-time |
| Tier 20 Tutoring or Material | $19.99 | one-time |


## Frequently asked questions

### Is All Formulas app free?

All Formulas app costs $0.99, with no in-app purchases.

### Is BidNote free?

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

### Which has better reviews, All Formulas app or BidNote?

BidNote is rated higher. All Formulas app averages 4.3 out of 5 from 12 ratings, while BidNote averages 4.8 from 4 ratings.

### Do All Formulas app or BidNote have ads?

Neither All Formulas app nor BidNote shows ads.

### Which is updated more often, All Formulas app or BidNote?

All Formulas app ships an update every 3 months, and BidNote weekly. Most recently, All Formulas app was updated on September 11, 2026 and BidNote on June 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*