Comparison

All Formulas app vs BidNote

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

All Formulas app

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
Read full description

All Formulas — Math, Physics & Chemistry Every formula you need for school, one search away. All Formulas is a fast, offline reference and practice app covering 400+ formulas across Math, Physics, and Chemistry, aligned to the NCERT/CBSE syllabus for classes 8–12. WHAT YOU GET • 238 Math formulas — algebra, geometry, trigonometry, calculus prep, probability, and more • 141 Physics formulas — mechanics, optics, electricity, magnetism, modern physics • 60 Chemistry formulas — kinetics, equilibrium, electrochemistry, solutions, and more • Interactive calculators — enter your values, pick what to solve for, get the answer instantly. No rearranging algebra by hand. • Search everything at once — type a formula name, topic, or symbol and jump straight to it • Practice quizzes — test yourself by topic and see which formulas need another look • Works fully offline — every formula lives on your device, no internet required • Snap & Solve and AI Tutor — photograph a problem or ask a question for step-by-step help • Unit converter for quick everyday conversions BUILT FOR STUDENTS Organized by topic instead of one long list, so you find what you need mid-problem — not mid-search-results. Built for daily homework and exam revision alike. PRIVACY No ads. No account required. No tracking. Full privacy policy available in-app under Settings. One-time purchase. Everything unlocked, forever.

About

BidNote

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
Read full description

BidNote is a platform that provides educational material and tutoring to individuals or groups of students. Once approved by our team, educators can provide course/content specific material and tutoring for free or a small price. And because BidNote is partnered with PayPal Payouts, educators can receive a daily commission payout from BidNote. No more scouring the internet for hours only to find help or lessons that aren't useful to a course you're taking. Find material and tutoring curated by people who actually took and know your course. Take the first step to a better educational experience and download BidNote. Features: - Handwritten/Typed material - Video lessons and content - Course specific content - Asynchronous tutoring - Updating material - PayPal/Venmo commission payouts - Document scanning - Download and access purchased material - Affordable pricing ($0.99-$20) - Manual review of all content posted (fraud/scam prevention) - One on one lessons and reviews - Detailed and well crafted content + help - And much more!

Screenshots

All Formulas app4 screens
BidNote4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
All Formulas app versus BidNote: the parameters behind the verdict, then further details
ParameterAll Formulas appBidNote
Price$0.99Free — better
Rating4.3 (12 ratings)4.8 (4 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings12 — better4
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better14.5
Further details — not scored
Size23 MB17 MB
Age rating4+12+
DeveloperRanjeet KumarGavin Wolfe

Customer experience

All Formulas app

All ratings12 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

BidNote

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

All Formulas app

No in-app purchases

10 purchases

BidNote

One-time10
  • Tier 2 Tutoring or Material$1.99
  • Tier 3 Tutoring or Material$2.99
  • Tier 4 Tutoring or Material$3.99
Show 7 more
  • Tier 5 Tutoring or Material$4.99
  • Tier 6 Tutoring or Material$5.99
  • Tier 8 Tutoring or Material$7.99
  • Tier 10 Tutoring or Material$9.99
  • Tier 13 Tutoring or Material$12.99
  • Tier 15 Tutoring or Material$14.99
  • Tier 20 Tutoring or Material$19.99

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.

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