Comparison

Instant Unit Calc vs DELTAMin

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

Head to head
About

Instant Unit Calc

Features
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Simple Calculator combines a calculator and a unit converter in one app -- see your result converted into other units as you type, no switching required. Key features: - Handles complex expressions with parentheses, not just the four basic operations - An always-visible conversion panel across 5 categories: length, weight, volume, area, and temperature - Mixed-unit math like "2 cm + 3 kg" -- results are kept per unit instead of forcing a wrong conversion - Real dimensional analysis: "3 m × 4 m = 12 m²" -- multiplying and dividing changes the unit correctly - Cross-category multiplication/division shows a synthesized unit, like "10 mL ÷ 2 kg = 5 mL/kg" - Define your own custom units, like "1 gold coin = 17 silver coins, 1 silver coin = 23 copper coins" - Three themes: Light, Dark, and follow system setting - A focused, uncluttered interface -- no extra features to get in your way

About

DELTAMin

Features
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Creating a truly valuable product like DELTAMin requires a long-term commitment to understanding and addressing user needs. We remain focused on the real-world user experience, striving to refine our product capabilities so that technology and design genuinely serve users' daily requirements. DELTAMin is a user-oriented management application that organizes its features around the relationships between tools, tasks, and costs. Users can configure parameters—such as pricing, cycles, capabilities, and format constraints—and verify coverage. The app supports task management, usage timing, frequency tracking, and payment logging, while visualizing resource allocation and cost fluctuations through coverage matrices, bar charts, line graphs, and donut charts. A comparative analysis feature combines weighted set coverage, functional similarity, and constraint-based search to retain essential tools and identify functional gaps; a conditional analysis tool allows for the simulation of changes in pricing and demand. We believe that a great product is not created in a single step but evolves through continuous usage and feedback. User questions, suggestions, and real-world experiences are vital drivers of product improvement. We carefully analyze every piece of feedback and continuously iterate to ensure the product matures and improves over time.

Screenshots

Instant Unit Calc2 screens
DELTAMin4 screens

Verdict

The call

The clearest difference is ads: DELTAMin at none against Instant Unit Calc's shown. Instant Unit Calc's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences · 2 level
Instant Unit Calc versus DELTAMin: the parameters behind the verdict, then further details
ParameterInstant Unit CalcDELTAMin
PriceFreeFree
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size34 MB14 MB
Age rating4+4+
DeveloperKeisuke YamakawaDaniel Cross

In-app purchases

None

Instant Unit Calc

No in-app purchases

None

DELTAMin

No in-app purchases

Questions

Is Instant Unit Calc free?
Instant Unit Calc is free to download, with no in-app purchases.
Is DELTAMin free?
DELTAMin is free to download, with no in-app purchases.
Do Instant Unit Calc or DELTAMin have ads?
Instant Unit Calc shows ads; DELTAMin does not.

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