Trivigintuple Calc vs eAbacus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trivigintuple Calc
Read full descriptionHide full description
Display 23 calculators and perform calculations with each one.
eAbacus
Read full descriptionHide full description
eAbacus is a modern digital abacus for iPhone, iPad, and Mac. Feel natural bead motion under your fingertips—great for mental-math practice, mnemonic lessons, and classroom demos. REAL DIALING • Tap, drag, and multi-touch multiple rods at once • Optional click sound and haptics • Live reading above the board, plus place-value labels on the beam • Auto or manual rod count, with a clear units marker TEACHING MODE • Addition, subtraction, multiplication, and division mnemonics • Step-by-step bead highlights—practice or watch a demo • Clear the board to return to a verse’s starting state • Ideal for self-study, parents, and teachers EXAM MODE • Timed problems with selectable operations and difficulty • Dial the answer on the board, then submit • Closed-book option hides the reading and place labels—perfect for quizzes HISTORY & SHARE • Saves from clears, finished exams, and manual snapshots • Restore any board state, or screenshot and share MAC PODIUM MIRRORING • Dial on iPhone or iPad; a Mac on the same LAN mirrors the board live • Giant reading, place labels, and teaching steps for projection • Built for classrooms, tutoring, and live demos Whether you’re learning abacus basics, practicing mental arithmetic, or teaching mnemonics on a big screen—eAbacus makes the classic abacus ready for today’s devices.
Screenshots
Verdict
The clearest difference is ads: eAbacus at none against Trivigintuple Calc's shown. eAbacus also leads on update cadence (daily vs every 2 weeks). Trivigintuple Calc's advantage is iOS requirement (15.8.3 vs 18.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Trivigintuple Calc ships an update every 2 weeks, eAbacus daily. The most recent releases landed on September 29, 2026 and October 4, 2026 respectively.
| Parameter | Trivigintuple Calc | eAbacus |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.8.3 — better | 18.0 |
| Further details — not scored | ||
| Size | 36 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideaki Uchikoshi | Weigan Technology (Shenzhen) Co., Ltd. |
In-app purchases
Trivigintuple Calc
No in-app purchases
eAbacus
No in-app purchases
Questions
Is Trivigintuple Calc free?
Is eAbacus free?
Do Trivigintuple Calc or eAbacus have ads?
Which is updated more often, Trivigintuple Calc or eAbacus?
Other comparisons
