Comparison

Transistors Handbook vs Learn Physics Offline

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

Head to head
About

Transistors Handbook

This app serves as a comprehensive guide to transistors, offering detailed information on over 51,000 types. Users can search for transistors by name or power, view graphical schemas, and access datasheets. It's designed to assist in selecting and designing electronic circuits.

Highlights
  • Database of over 51,000 transistors
  • Detailed transistor specifications
  • Graphical schema and code information
  • Search by name or power
  • Online datasheet access
  • Information on Silicon and Germanium transistors
Features
Read full description

Transistors Handbook - Your Transistor Guide. This app will guide you to know, choose, select and design your next board masterpiece using that transistor you weren’t remembering. With this app you can update the transistor informations and share it with other app users. What is a transistor? (from Wikipedia): “A transistor is a semiconductor device used to amplify and switch electronic signals and power. It is composed of a semiconductor material with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor's terminals changes the current flowing through another pair of terminals. Because the controlled (output) power can be much more than the controlling (input) power, a transistor can amplify a signal. Today, some transistors are packaged individually, but many more are found embedded in integrated circuits.” The transistor is the fundamental building block of modern electronic devices, and is ubiquitous in modern electronic systems. Following its release in the early 1950s the transistor revolutionized the field of electronics, and paved the way for smaller and cheaper radios, calculators, and computers, among other things.” With Transistors Handbook you will se the design, the kind and all the aspects of more than 51.000 transistors, the application will provide the following info: - Kind - Graphical Schema - Code - Type - Material - Power - VCB - VCE - VEB - LC - FT - HFE - Note of the Transistor - Similar - Online Datasheet You can also use the embedded search engine to search a transistor for its name or power. The coverage of the transistors is about the complete catalogue of the Silicon and Germanium. The series included are:, PNP and NPN, series 10 ~ 12, 14 ~ 19, 25 ~ 28, 2A ~ 2D, 2G, 2H, 2N, 2P, 2S, 2T, 30, 35, 37, 38, 3N, 3O, 3S, 3T, 40 ~ 43, 45, 4N, 50, 52, 55, 56, 5N, 60, 63, 6N, 71 ~ 74, 7N, 80, 81, 85, 90, 92, 94, A1, A5, A7, A8, AC, AD, AF, AJ ~ AM, AP, AR ~ AW, BC ~ BF, BJ, BL, BN, BP, BR ~ BV, C0 ~ C9, CA ~ CE, CG ~ CN, CP ~ CV, CX, D1 ~ D8, DA ~ DD, DH, DJ, DK, DM, DN, DP ~ DT, DW, DX, DZ, E1 ~ E3, E5 ~ E7, EA, EC, ED, EF, EJ, EL ~ EN, EQ ~ ET, EW, F1 ~ F5, FA ~ FH, FJ, FK, FM ~ FQ, FS, FT, FV, FX, FZ, G2, G6, GA ~ GF, GI, GM, GP, GS, GT, HA ~ HF, HK, HL, HN, HP, HS, HT, HV, HX, ID, IM, IN, IR, IT, J2, J4, J6, JA, JC, JE, JF, JO, K2, K4, K9, KD ~ KG, KM ~ KP, KR ~ KU, L4, L5, LB, LD, LI, LJ, LL ~ LP, LT, LX, M1, M2, MA ~ MH, MJ, MM ~ MU, MX, MZ, NA ~ NC, NJ, NK, NM, NP, NR ~ NT, NX, NZ, OC, OD, P2 ~ P4, P6, P7, P9, PB ~ PE, PH ~ PO, PR ~ PU, PX, PZ, Q, Q5, R3, R5, R7 ~ R9, RC, RE, RJ, RS, RT, RV, S0 ~ S2, S4 ~ S9, SA, SC ~ SH, SK, SM, SN, SP, SQ, SS, ST, SV, SX, SY, T0 ~ T3, TA, TB, TD ~ TF, TI, TK ~ TN, TP, TR, TS, TV, U2, UC, UM, UN, UP, V1, V2, V4, V7, W2, WT, XA ~ XC, XP, XQ, XS, ZB, ZD, ZG, ZH, ZT, ZU, ZX, with volts, frequencies, power, HFE (gain), similar transistors and pin design. The list may not be exhaustive, if you find any transistor missing, let us know. *** Don't forget to check also our Mosfet Handbook application. The perfect companion of Transistors Handbook.

About

Learn Physics Offline

Features
Read full description

Dive deep into the world of Physics with Learn Physics, the ultimate study companion and formulas reference. Suitable for both students and enthusiasts, our app is packed with physics tips, essential formulas, and frequently asked questions. Master classical mechanics, electromagnetism, quantum physics, and more! Features: Physics Tips and Tricks: Access handy tips and tricks that simplify complex physics concepts. Physics Formulas: Find a comprehensive collection of physics formulas for easy reference. Physics FAQs: Get answers to frequently asked physics questions, curated by experts. Dark Mode: Enhance your study experience with a comfortable and energy-efficient dark theme. Report Bug: Help us improve the app by reporting any issues you encounter. Adjustable Font Size: Customize the text size to suit your reading preferences. Share App with Friends: Easily share the app with your friends and peers. Great User Interface: Enjoy a user-friendly interface that makes learning physics a delight. Download Learn Physics now and take your understanding of the universe to the next level!

Screenshots

Transistors Handbook4 screens
Learn Physics Offline4 screens

Verdict

The call

The clearest difference is ads: Transistors Handbook at none against Learn Physics Offline's shown. Transistors Handbook also leads on update cadence (fortnightly vs every 15 months) and iOS requirement (11.4 vs 13.0). Learn Physics Offline's advantage is price ($1.99 vs $3.99). On in-app purchases and device support 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

Transistors Handbook costs $3.99 and Learn Physics Offline $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Transistors Handbook ships an update fortnightly, Learn Physics Offline every 15 months. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
Transistors Handbook versus Learn Physics Offline: the parameters behind the verdict, then further details
ParameterTransistors HandbookLearn Physics Offline
Price$3.99$1.99 — better
Rating4.0 (22 ratings) — better—
Positive reviews27.3% of reviews—
Number of ratings22 — better—
Update frequencyFortnightly — betterEvery 15 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.4 — better13.0
Further details — not scored
Size22 MB42 MB
Age rating4+4+
DeveloperCentro Studi Informatica di Danilo PrioreMuhammad Mubeen

In-app purchases

None

Transistors Handbook

No in-app purchases

None

Learn Physics Offline

No in-app purchases

Questions

Is Transistors Handbook free?
Transistors Handbook costs $3.99, with no in-app purchases.
Is Learn Physics Offline free?
Learn Physics Offline costs $1.99, with no in-app purchases.
Do Transistors Handbook or Learn Physics Offline have ads?
Learn Physics Offline shows ads; Transistors Handbook does not.
Which is updated more often, Transistors Handbook or Learn Physics Offline?
Transistors Handbook ships an update fortnightly, and Learn Physics Offline every 15 months. Most recently, Transistors Handbook was updated on October 6, 2026 and Learn Physics Offline on October 9, 2026.

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