Comparison

Transistors Handbook vs Polynomial

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

Polynomial

Features
Read full description

The PolynomialSolver is carefully designed to be a simple and elegant app. Easy to use, easy to understand, simple and effective It solves (finds all the roots) polynomials of any order (any degree). Roots can be real, complex or combination of both. No problem. This app has you covered. To find all the solutions, it uses Aberth Ehrlich algorithm for higher order polynomials. The polynomial is beautifully presented in mathematical format. You can also solve multiple polynomials at once. You can also share the polynomial and its solution. Perform the polynomial division to find the quotient and remainder. This app also plots beautiful graph of the polynomial(s) so that you can visualize the solution in the graph. The graph can be shared with other or it can be saved locally on your device. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. This is a perfect app if you are a student learning to solve these kind of equations. There is also a Study page to help you with learning some important polynomial concepts. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!

Screenshots

Transistors Handbook4 screens
Polynomial4 screens

Verdict

The call

The clearest difference is update cadence: Transistors Handbook at fortnightly against Polynomial's monthly. Transistors Handbook also leads on iOS requirement (11.4 vs 15.1). Polynomial's advantage is price ($1.99 vs $3.99). On ads, 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 Polynomial $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, Polynomial monthly. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Transistors Handbook versus Polynomial: the parameters behind the verdict, then further details
ParameterTransistors HandbookPolynomial
Price$3.99$1.99 — better
Rating4.0 (22 ratings) — better—
Positive reviews27.3% of reviews—
Number of ratings22 — better—
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.4 — better15.1
Further details — not scored
Size22 MB36 MB
Age rating4+4+
DeveloperCentro Studi Informatica di Danilo PrioreOm Prakash Chapagain

In-app purchases

None

Transistors Handbook

No in-app purchases

None

Polynomial

No in-app purchases

Questions

Is Transistors Handbook free?
Transistors Handbook costs $3.99, with no in-app purchases.
Is Polynomial free?
Polynomial costs $1.99, with no in-app purchases.
Do Transistors Handbook or Polynomial have ads?
Neither Transistors Handbook nor Polynomial shows ads.
Which is updated more often, Transistors Handbook or Polynomial?
Transistors Handbook ships an update fortnightly, and Polynomial monthly. Most recently, Transistors Handbook was updated on October 6, 2026 and Polynomial on October 11, 2026.

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