Custom Unit Converter vs Unit Conveyor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Custom Unit Converter
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MyUnit is a flexible unit conversion app that lets you freely add your own categories and units. In addition to standard conversions such as length, area, volume, temperature, weight, and speed, MyUnit also supports specialized units used in engineering, science, research, and business, including flow rate, pressure, vacuum, energy, power, force, resistance, frequency, and more. Many unit conversion apps only support pre-installed units. This can be inconvenient when the unit you need is missing or when the app does not fit your workflow. MyUnit solves this by allowing you to create your own categories and add the units you need. For example, you can create categories such as Pressure, Flow Rate, Temperature, or Vacuum, and register units such as Pa, psi, sccm, slpm, Torr, and more. MyUnit also supports multi-step calculations. In addition to simple multiplication-based conversion, you can create flexible conversion rules using ×, ÷, +, −, and ^. This makes it easier to handle conversions that cannot be expressed with only one simple factor. If you often calculate special formulas manually, MyUnit can help you save time. With this update, MyUnit now supports CSV export. You can export registered categories, units, and conversion data in CSV format. This makes it easier to check, organize, record, and share the data you created in the app. CSV export is useful for reviewing unit lists in spreadsheet software, organizing conversion rules, keeping research or work records, sharing data, and creating documents. Main Features 1. Add categories and units freely Create your own categories and register the units you need. 2. Multi-step calculations Create custom conversion rules using ×, ÷, +, −, and ^. 3. CSV export Export registered categories, units, and conversion data as CSV files. 4. Automatic conversion Enter one value and other units in the same category are automatically calculated. 5. Easy copy operation Copy conversion results quickly for reports, notes, emails, documents, and spreadsheets. 6. Rearrange categories and units Place frequently used categories and units at the top for faster access. 7. Useful for technical fields Suitable for engineering, science, research, experiments, design, development, evaluation, maintenance, and on-site checks. 8. Useful for everyday conversion Also convenient for daily conversions such as length, temperature, weight, volume, area, and speed. Recommended For ・People who want to add their own categories and units ・People who handle engineering, scientific, or technical units ・Researchers, students, engineers, technicians, and developers ・People who check overseas specifications or technical documents ・People who want to manage conversion data with CSV files Use Cases Students and researchers Useful for assignments, reports, experiments, research data, and unit conversion records. Engineers and technicians Useful for checking flow rate, pressure, vacuum, power, energy, equipment specifications, sensor specifications, and design values. Data management and sharing Export categories, units, and conversion data as CSV files and use them in spreadsheet software for review, records, and sharing. Supported Category Examples Temperature, length, area, volume, angle, weight, time, speed, power, energy, electric charge, frequency, data transfer rate, electric current, resistance, acceleration, force, flow rate, pressure, and more. Why Choose MyUnit ・Create your own categories ・Use ×, ÷, +, −, and ^ ・Export data in CSV format ・Automatically convert multiple units at once ・Rearrange categories and units ・Useful for work, research, study, and daily life MyUnit is not just a unit conversion app. It lets you customize categories, units, and conversion rules to match your needs. Premium Features ・Ad-free experience Terms of Use:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy:http://244div.com/privacy-policy/
Unit Conveyor
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1 kg is 1000 g. 1 m is 100 cm. Unit Conveyor shows what happens to a number when the unit changes — so children see it, instead of memorising it. ■ The unit staircase Length, weight, volume and time units are laid out as steps. Send a crate up a step and the number gets smaller; send it down and it gets bigger. The crate travels between steps so the cause is visible. ■ The conversion line Four boxes come down the conveyor. Pick the one with the right answer. The wrong boxes are not random numbers. "Counted one zero too few", "multiplied instead of divided", "split an hour into 10" — each one is built from a mistake children actually make. So no box can be dismissed at a glance. Every question needs real thinking. ■ Shipping slips (word problems) "We used 2 m and 50 cm of ribbon. How many cm altogether?" Matching two different units before adding them is a separate skill, and it gets its own line. ■ Report Shows the percentage correct for each unit, so you can see which unit needs practice. ■ Safe to hand to a child ・Free. No in-app purchases and no subscriptions ・Ads appear only on the report screen, never while a question is on screen ・No full-screen ads and no video ads ・Results are stored on the device only, and are deleted with the app ・No camera, microphone, location, contacts or notifications Designed so a primary-school child can use it alone.
Screenshots
Verdict
The clearest difference is in-app purchases: Unit Conveyor at none against Custom Unit Converter's 1. Custom Unit Converter's advantage is update cadence (fortnightly vs every 6 weeks). On price, 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
Both are free to download. Custom Unit Converter sells 1 in-app purchase, starting at $0.49 per month. Unit Conveyor asks for nothing beyond the download.
Custom Unit Converter ships an update fortnightly, Unit Conveyor every 6 weeks. The most recent releases landed on October 30, 2026 and October 26, 2026 respectively.
| Parameter | Custom Unit Converter | Unit Conveyor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly — better | Every 6 weeks |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.2 — better | 16.4 |
| Further details — not scored | ||
| Size | 12 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Tsuyoshi Ninomiya | Yoshihide Maehama |
In-app purchases
Custom Unit Converter
- MyUnit7 Days trial$0.491 Month
Unit Conveyor
No in-app purchases
Questions
Is Custom Unit Converter free?
Is Unit Conveyor free?
Do Custom Unit Converter or Unit Conveyor have ads?
Which is updated more often, Custom Unit Converter or Unit Conveyor?
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