Calculatrix vs Tango Event
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Calculatrix
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Calculator with history and curve plotting
Tango Event
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Tango Event helps your company organize events or training. Then helps company accumulate knowledge, manage training history, and continue extensive training after the event. How to operate: Enterprises / organizations have independent management accounts, set up and manage their own events. Information is kept confidential within your company. Main functions: - Company create events, list of nominated attendees, member ID, QR codes, invitation tickets. Or create public events, free entry. - Before the event: member have an invitation ticket, download documents, register a session of interest, Q&A with speakers / teachers. - Access control automatically by scanning QR code. - In the event: interact with speakers to scan by QR code when the speaker asks a question. - After the event: attendees gain access to documents, photos, interactive history, and continue to discuss course topics if required by the company / administrator. - This app helps your company and staff to accumulate knowledge according to each event and training course, help search and organize long-term training activities. - Paid contents are Private Events or Training Courses which users have to pay to attend. The costs is defined separately by the organizers, not defined by this application. This application does not have any payment features. - Individual customer has to contact to the organizers to buy Coupon Code for each Private Event of Training Course, and then input the Coupon Code on this app. - There is no fee to create an account with users who attend events or training courses. - Users can create an account through the Tango Event application or log in with a Google or Facebook account. - This app primarily is distributed in Vietnam.
Screenshots
Verdict
The clearest difference is ads: Tango Event at none against Calculatrix's shown. Tango Event also leads on update cadence (fortnightly vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Calculatrix ships an update every 4 months, Tango Event fortnightly. The most recent releases landed on September 22, 2026 and September 11, 2026 respectively.
| Parameter | Calculatrix | Tango Event |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Fortnightly โ better |
| Ads | Yes | No โ better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 โ better | 12.0 |
| Further details โ not scored | ||
| Size | 30 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Kangah Jacques N'GUESSAN | HUNGVIET TECHNOLOGY & INVESTMENT TRADING JOINT STOCK COMPANY |
In-app purchases
Calculatrix
No in-app purchases
Tango Event
No in-app purchases
Questions
Is Calculatrix free?
Is Tango Event free?
Do Calculatrix or Tango Event have ads?
Which is updated more often, Calculatrix or Tango Event?
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