Solution Dilution Calculator vs Locker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solution Dilution Calculator
This utility app helps users calculate the precise volume of stock concentrate needed to create a diluted solution of a specific concentration and volume. It supports various concentration units and is designed for educational and research laboratory use.
- Dilution calculations
- Supports mass/volume units
- Supports weight/volume units
- Ideal for labs and education
- User-friendly interface
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The Solution Dilution Calculator calculates the volume of stock concentrate needed to achieve a specified volume and concentration. It uses the formula: C₁V₁ = C₂V₂ where: C₁ = Initial concentration (stock solution) V₁ = Volume to be removed (aliquot) from the stock solution C₂ = Final concentration of the diluted solution V₂ = Final volume of the diluted solution (after dilution with the solvent) Designed for both teaching and research laboratories, this calculator can be used for dilution calculations with solutions expressed in mass per volume (e.g., g/L, mg/mL) or weight per volume (e.g., % w/v) concentration units. Example Dilution Calculation: Question: What volume of a 10 mM stock solution is required to prepare 20 mL of a 50 μM solution? Solution: Using the equation C₁V₁ = C₂V₂, where: C₁ = 10 mM C₂ = 50 μM V₂ = 20 mL V₁ = Unknown Steps: Enter 10 into the Concentration (start) box and select millimolar (mM). Enter 50 into the Concentration (final) box and select micromolar (μM). Enter 20 into the Volume (final) box and select milliliters (mL). The result, 100 microliters (0.1 mL), will appear automatically. Thank you for your support! Stay tuned for more updates.
Locker
Securely store and manage all your passwords and private information. Supports text, voice, drawings, and photos with high-strength encryption. Offers iCloud backup and restore for easy data recovery.
- Store text, voice, drawings, and photos
- High-strength encryption
- Import and export passwords
- Gesture and fingerprint login
- Random password generator
- iCloud backup and restore
- Data destruct feature
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Too many passwords to remember? Still, use the same password for each site? Locker - the safest and most convenient private information manager, provides a whole new way of protecting your personal information. Store Passwords Safe and Easy. Support text, voice, hand drawing, and photo. — FEATURES — - Support import and export, easy to manage your passwords. - Support gesture and fingerprint, login faster. - Customize color and icon for the record. - High-strength encryption to ensure your data is safe. - Support text, voice, hand drawing, and photo. - Random Password Generator. - Clone record. - Powerful association features, allowing you to quickly enter data. - Support for iCloud backup and iCloud restore. Even for changing the phone or the phone had lost, it can quickly recover data. - Data destruct feature, after the wrong password more than setting times, the data will be destroyed — SECURITY — Through Apple's security mechanism scrutinized and iOS security systems, all private data can be only stored on user’s devices or iCloud by encrypted. Nobody, including developers, is able to get private data and master passwords. It can be assured that encrypted private data cannot be hacked. — LOCKER — Nowadays, everyone accesses the website with an account and password. It is dangerous when you use the same username and password. Once it had been stolen, other websites’ information is at risk of leakage. On the other hand, when you use different and complex passwords, it is very hard to remember all of them. So, YOU NEED LOCKER! Locker is a safe and convenient password manager. It is easy to use, and fast to import and input. It can manage text, hand-painted pictures, and sound recordings. It is very safe, even if the developers can not break the user's data. If any questions or feedback, please contact us by Email. we are looking forward to your feedback which is our greatest driving force to move on. support@mxcode.com * Privacy Policy: https://api.mxcode.com/html/locker/privacy/en.html * Terms of Use: https://api.mxcode.com/html/locker/terms/en.html
Screenshots
Verdict
Solution Dilution Calculator and Locker both sit at 5.0 stars, but that hides the real split: 100% of Locker's written reviews are positive against 0% of Solution Dilution Calculator's. Locker also leads on price (Free vs $2.99) and update cadence (every 3 weeks vs every 22 months). Solution Dilution Calculator's advantage is in-app purchases (none vs 3) and iOS requirement (13 vs 15.6). On rating, ratings volume, ads 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
Locker is free to download; Solution Dilution Calculator costs $2.99 up front. Locker sells 3 in-app purchases, starting at $1.49 per month. Solution Dilution Calculator asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Solution Dilution Calculator against 5.0 for Locker. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 0% of Solution Dilution Calculator's written reviews are positive against 100% of Locker's.
Solution Dilution Calculator ships an update every 22 months, Locker every 3 weeks. The most recent releases landed on September 10, 2026 and September 5, 2026 respectively.
| Parameter | Solution Dilution Calculator | Locker |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 22 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | 晖 姚 |
Customer experience
Solution Dilution Calculator
Locker
In-app purchases
Solution Dilution Calculator
No in-app purchases
Locker
- 1-Month Plan$1.491 Month
- 1-Quarter Plan$2.993 Months
- 1-Year Plan$9.991 Year
Questions
Is Solution Dilution Calculator free?
Is Locker free?
Which has better reviews, Solution Dilution Calculator or Locker?
Do Solution Dilution Calculator or Locker have ads?
Which is updated more often, Solution Dilution Calculator or Locker?
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