格纸 vs Standard Deviation Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
格纸
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格纸: 创造美丽如妖精的壁纸! 格纸是一个壁纸生成器, 只需点击, 即可随机生成多彩的壁纸. 只要手指点点就可以造出"!妖精!"来 \(^_-)/
Standard Deviation Calc
Calculate standard deviation for sample or population data. Input numerical values to find standard deviation, count, sum, mean, variance, and more. Get quick statistical insights with this easy-to-use tool.
- Calculate standard deviation
- Sample or population data
- Compute mean and variance
- Count numerical values
- Sum of numbers
- List of differences
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Use this app to calculate standard deviation for a population or sample data set. Enter your numerical values, and the app will instantly calculate standard deviation, variance, mean, count, sum, and other supporting statistics. Results are estimates for informational purposes only. We are very happy to serve you. If you have any requests, don't hesitate to contact us. - https://www.facebook.com/phan.nhatdang.3/ - phannhatd@gmail.com
Screenshots
Verdict
The clearest difference is in-app purchases: 格纸 at none against Standard Deviation Calc's 1. Standard Deviation Calc's advantage is ads (none vs shown) and ratings volume (12 vs 1). On price, rating, update cadence 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
Both are free to download. Standard Deviation Calc sells 1 one-off in-app purchase. 格纸 asks for nothing beyond the download.
格纸 holds the better App Store score, 4.0 against 3.8. That said, the two scores are not equally well evidenced: Standard Deviation Calc has 12 ratings behind it against 1, so its average is the more settled of the two.
格纸 ships an update every 4 months, Standard Deviation Calc every 5 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | 格纸 | Standard Deviation Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | 3.8 (12 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 | 12 — better |
| Update frequency | Every 4 months — better | Every 5 months |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | 泉华 官 | Phan Nhat Đang |
Customer experience
格纸
Standard Deviation Calc
In-app purchases
格纸
No in-app purchases
Standard Deviation Calc
- Remove ads$1.99
Questions
Is 格纸 free?
Is Standard Deviation Calc free?
Which has better reviews, 格纸 or Standard Deviation Calc?
Do 格纸 or Standard Deviation Calc have ads?
Which is updated more often, 格纸 or Standard Deviation Calc?
Other comparisons
