Comparison

Seattle Gradebook vs Zapp EU

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

Head to head
About

Seattle Gradebook

Access your academic performance with this app. View grades, calculate your GPA, and preview upcoming assignments. Your login information is kept private and used solely for direct connection to The Source.

Highlights
  • View grades
  • Calculate GPA
  • Preview assignments
  • Secure login
  • Direct connection to The Source
Features
Read full description

The Source App for Seattle Public Schools View your grades in the app Calculate your GPA Preview Assignments This app is not associated with Seattle Public Schools or PowerSchool. Login info stays private and is only used to connect directly to The Source.

About

Zapp EU

Features
Read full description

Zapp is a new kind of parental control app, built in the EU, designed for families who want less fighting about screen time and more trust. ENERGY MODE Instead of hard time limits, your child gets a daily energy budget. Studying, exercising, and creative activities recharge it. Social media and passive scrolling drain it. Your child learns to manage their own screen time, like a game, not a punishment. Study earns +2 energy per minute. Exercise earns +10 energy per 1000 steps. Gaming drains 2 energy per minute. TikTok and scrolling drains 3 energy per minute. When energy reaches zero, apps are blocked. They can earn more by doing something good. No arguments needed. AI COMPANION A safe, age-appropriate chatbot your child can talk to about anything. Bullying, strangers online, scary content, or just how their day went. If the AI detects something concerning, parents get a discreet safety flag. Message content is never shared, your child's trust is never broken. Compliant with the EU AI Act. SOS BUTTON One tap sends an emergency alert to all parents with live GPS location sharing. Location updates every 60 seconds until resolved. Parents are notified instantly via push notification. FAMILY CHAT Built-in messaging between all family members. No need for a separate app. Push notifications for new messages. SCREEN TIME AND APP BLOCKING Powered by Apple Screen Time APIs using FamilyControls and ManagedSettings. Set daily limits, schedules, and per-app rules. Create location-based profiles with different rules for school, home, and sports. Cannot be bypassed without the parent password. FAMILY PIN A 6-digit PIN prevents children from logging out of the child app without permission. Parents can view, copy, and regenerate it anytime. TRUST SCORE Children earn trust through responsible behavior and unlock more freedoms over time. Not punishment, growth. SMART ALERTS AI-powered alerts for concerning patterns like late-night usage, mood decline, and unusual app usage spikes. Push notifications sent directly to parents. MOOD CHECK-INS Daily emoji mood tracker. Parents see trends over time. Catch problems early. BEDTIME MODE Automatic wind-down reminders and device blocking at bedtime. ONE APP, TWO EXPERIENCES Parents and children use the same app with different interfaces. Parents see the dashboard, children see Energy Mode. Available in English, Swedish, and German. PRIVACY AND GDPR All data stored in the EU. Fully GDPR compliant. AI conversations are private, parents see safety flags only. Push notifications never contain personal data. Location history auto-deleted after 90 days. AI conversations deleted after 30 days. Full right to data deletion at any time. No data sold to third parties. Compliant with the EU Children's Code and Age Appropriate Design Code. PRICING Free plan includes 1 child, screen time, SOS, push notifications, and Family PIN. Zapp+ costs 49 kr per month or 399 kr per year and includes up to 5 children, AI Companion, Trust Score, Smart Alerts, Family Chat, mood tracking, and weekly reports. Built in Sweden by Enovira AB. Made for families across Europe. This app applies Apple’s standard end user license agreement (EULA) to all countries or regions. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Seattle Gradebook4 screens
Zapp EU4 screens

Verdict

The call

The clearest difference is in-app purchases: Seattle Gradebook at none against Zapp EU's 2. On price, ads, 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. Zapp EU sells 2 in-app purchases, starting at $3.99 per month. Seattle Gradebook asks for nothing beyond the download.

Scorecard1 real difference · 9 level
Seattle Gradebook versus Zapp EU: the parameters behind the verdict, then further details
ParameterSeattle GradebookZapp EU
PriceFreeFree
Rating4.5 (68 ratings) — better—
Positive reviews87.9% of reviews—
Number of ratings68 — better—
Update frequencyEvery 5 weeks—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.618.0 — better
Further details — not scored
Size19 MB6 MB
Age rating4+4+
DeveloperAndrew HuntworkEnovira AB

Bugs and requests

Seattle Gradebook

Reported bugs

2 issues
  • App not showing some classes
  • App not working anymore

Requested features

3 requests
  • Widget for the app
  • Replace app logo
  • Assignment calculator similar to original

Zapp EU

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Seattle Gradebook

No in-app purchases

2 purchases

Zapp EU

Subscriptions2
  • Zapp+ monthly subscription7 Days trial$3.991 Month
  • Zapp+ yearly subscription7 Days trial$29.991 Year

Questions

Is Seattle Gradebook free?
Seattle Gradebook is free to download, with no in-app purchases.
Is Zapp EU free?
Zapp EU is free to download, with in-app purchases available.
Do Seattle Gradebook or Zapp EU have ads?
Neither Seattle Gradebook nor Zapp EU shows ads.

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