Comparison

Convert vs RubberSource

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

Head to head
About

Convert

Easily convert hundreds of physical units and dimensions with this powerful tool. It also includes a currency converter with daily updated exchange rates for over 130 countries and is available on Apple Watch.

Highlights
  • Unit conversion for 398 units
  • Currency conversion with daily rates
  • Integrated calculator
  • Apple Watch support
  • History charts for currencies
  • Copy & Paste functionality
Features
Read full description

A simple but powerful unit converter. Translates hundreds of physical units and dimensions quickly and easily. The currency converter features daily updated exchange rates for over 130 countries. CUSTOMER REVIEWS: 4½ (over 1000 reviews world wide) *** Apple Watch *** We bring the converter including currency exchange rates to your Apple Watch. Convert units and currencies directly on your watch. TOP FEATURES: ▶ Intuitive and efficient user interface ▶ A total of 398 units in 17 categories ▶ Shoe size conversion ▶ Calculator ▶ Daily updated currency converter ▶ History charts for all currencies ▶ Push notifications for currencies ▶ Univeral iPhone/iPad app ▶ Landscape support for iPad ▶ Copy & Paste ▶ Drag'n Drop your favorites to the toolbar ▶ Frequent free updates CATEGORIES: ▶ Currency ▶ Length ▶ Weight ▶ Temperature ▶ Speed ▶ Energy ▶ Angle ▶ Pressure ▶ Time ▶ Volume ▶ Area ▶ Power ▶ Data ▶ Torque ▶ Radioactivity ▶ Fuel consumption ▶ Force ▶ Shoe size ▶ Calculator Available upgrades with subscriptions: * 'Advanced features': $0.99 per 6 months No ADs, Currency Exchange Rates, Charts - Payment will be charged to iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. Privacy policy: https://www.bitcommander.ch/privacy-policy Terms of use: https://www.bitcommander.ch/terms-of-use-convertit

About

RubberSource

Features
Read full description

RubberSource provides a complete lining system, technical service, material, cement, and repair material. This slide rule contains chemical resistance ratings that have been developed from various sources. The purpose of this data is to help you narrow the choice of materials when selecting the proper liner for your specific needs. For the best recommendations on specifying all your rubber linings, please check with RubberSource’s technical department. Allow a safety margin beyond the most extreme conditions you expect. Wear due to abrasion, impact, and temperature extremes.

Screenshots

Convert4 screens
RubberSource4 screens

Verdict

The call

The clearest difference is in-app purchases: RubberSource at none against Convert's 2. RubberSource also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 3 months). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Convert sells 2 in-app purchases, starting at $0.99 per 6 months. RubberSource asks for nothing beyond the download.

UpkeepUpdate frequency

Convert ships an update every 3 months, RubberSource every 3 weeks. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 7 level
Convert versus RubberSource: the parameters behind the verdict, then further details
ParameterConvertRubberSource
PriceFreeFree
Rating4.7 (126 ratings) — better—
Positive reviews69.8% of reviews—
Number of ratings126 — better—
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS12.0 — better12.3
Further details — not scored
Size39 MB23 MB
Age rating4+4+
DeveloperRaphael OdermattAvanaire Design, LLC

In-app purchases

2 purchases

Convert

Subscriptions1
  • Advanced Features3 Days trial$0.996 Months
One-time1
  • Advanced Features$1.99
None

RubberSource

No in-app purchases

Questions

Is Convert free?
Convert is free to download, with in-app purchases available.
Is RubberSource free?
RubberSource is free to download, with no in-app purchases.
Do Convert or RubberSource have ads?
Convert shows ads; RubberSource does not.
Which is updated more often, Convert or RubberSource?
Convert ships an update every 3 months, and RubberSource every 3 weeks. Most recently, Convert was updated on October 20, 2026 and RubberSource on October 15, 2026.

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