Nuclides vs 第一次遇见科学
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nuclides
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Nuclides is a professional reference and calculation toolkit for nuclear technology, radiation protection, nuclear medicine, reactor data, and education. Key features: 1. Look up elements and nuclides, including half-life, decay modes, parent and daughter nuclides, radiation energies, and emission probabilities. 2. Explore extended nuclear data, including excited levels, gamma transitions, electron data, fission yields, nuclear moments, and ENSDF evaluation information. 3. Simulate gamma spectra from nuclide gamma-ray data with controls for live time, energy resolution, background, dead-time loss, and related detector parameters. 4. Run decay calculations, activity estimation, dose-rate estimation, effective dose estimation, radiation dose comparison, and unit conversions. 5. Use theranostics dosimetry tools for time-activity data, cumulated activity, and simplified MIRD relationships. 6. Consult radiation safety atlas entries, radiopharmaceutical references, material densities, physical constants, binding-energy charts, toxicity information, and the INES scale. 7. Browse nuclear power plant data, operating records, advanced reactor references, and small modular reactor information. Nuclides is designed for professionals, students, and users who need fast nuclear data lookup, radiation calculations, and clear technical references. Premium subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
第一次遇见科学
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第一次遇见科学——上海少年儿童出版社有限公司幼儿科学素养教育App 少年儿童出版社是新中国第一家以少年儿童为读者对象的专业少儿出版社。七十多年来,与新中国一代代少年儿童共同成长。 “第一次遇见科学”App,由上海少年儿童出版社有限公司权威出品,是面向5~7岁学龄前后幼儿的系统性科学启蒙课程。课程由上海少年儿童出版社有限公司与美国国家地理学习公司基于版权合作联合打造而成。 【APP内主要内容】 “第一次遇见科学”App包括课程课件、教案、视频、活动卡、评测系统等内容,帮助老师在线完成备课、上课、评测等教学环节。课程内容包含地球科学、物质科学、生命科学、社会科学等在内的96个主题。 【应用特点】 符合儿童认知发展,规律的课程设计。 授之以鱼,不如授之以“渔”。 世界一流的,科学教育资源整合。 真正意义上的,探究式学习。 本App由上海少年儿童出版社有限公司联手“阅门户”团队倾情打造。 【联系我们】 e-mail:service@touchread.com 技术支持:029-68518879
Screenshots
Verdict
The clearest difference is iOS requirement: 第一次遇见科学 at 12.0 against Nuclides's 15.6. On price, update cadence, ads 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
Both are free to download. Nuclides sells 2 in-app purchases, starting at $0.99 per month and 第一次遇见科学 sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Nuclides ships an update every 2 weeks, 第一次遇见科学 every 3 weeks. The most recent releases landed on September 9, 2026 and September 8, 2026 respectively.
| Parameter | Nuclides | 第一次遇见科学 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 128 MB | 76 MB |
| Age rating | 4+ | 4+ |
| Developer | 建锋 宋 | Shanghai Juvenile & Children's Publishing House Co., Ltd |
In-app purchases
Nuclides
- Premium Subscription · Monthly$0.991 Month
- Premium Subscription · Yearly$9.991 Year
第一次遇见科学
- 6阅读币$0.99
- 1阅读币$0.99
- 12阅读币$1.99
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- 25阅读币$3.99









