diff --git a/app/controllers/dashboard.js b/app/controllers/dashboard.js
index a8bccb9..eabd50e 100644
--- a/app/controllers/dashboard.js
+++ b/app/controllers/dashboard.js
@@ -1,6 +1,6 @@
 import Controller from '@ember/controller';
 import { computed } from '@ember/object';
-import { alias, not, sort } from '@ember/object/computed';
+import { alias, gt, not, sort } from '@ember/object/computed';
 import { inject as service } from '@ember/service';
 
 export default Controller.extend({
@@ -33,6 +33,8 @@ export default Controller.extend({
   showQuickFilterUnconfirmed: false,
   showQuickFilterConfirmed: false,
 
+  showFullContributionSync: gt('kredits.missingHistoricContributionsCount', 0),
+
   showIntroText: computed('kredits.{hasAccounts,currentUser}', function(){
     return (!this.kredits.hasAccounts || !this.kredits.currentUser);
   }),
diff --git a/app/routes/dashboard.js b/app/routes/dashboard.js
index a6b1d4e..c7242b0 100644
--- a/app/routes/dashboard.js
+++ b/app/routes/dashboard.js
@@ -11,8 +11,11 @@ export default class DashboardRoute extends Route {
       schedule('afterRender', this.kredits.syncContributions,
         this.kredits.syncContributions.perform);
     }
-    schedule('afterRender', this.kredits.fetchMissingContributions,
-      this.kredits.fetchMissingContributions.perform);
+    // TODO fetch automatically under a certain threshold
+    // The browser might delete cached data and we don't need manual re-syncs
+    // depending on how little is missing
+    // schedule('afterRender', this.kredits.fetchMissingContributions,
+    //   this.kredits.fetchMissingContributions.perform);
   }
 
 }
diff --git a/app/services/kredits.js b/app/services/kredits.js
index 12a58eb..dd8f24e 100644
--- a/app/services/kredits.js
+++ b/app/services/kredits.js
@@ -48,6 +48,8 @@ export default Service.extend({
   contributionsNeedSync: false,
   reimbursementsNeedSync: false,
 
+  missingHistoricContributionsCount: 0,
+
   init () {
     this._super(...arguments);
     this.set('contributors', []);
@@ -230,12 +232,20 @@ export default Service.extend({
       await this.loadObjectsFromCache('Contribution');
       this.set('contributionsNeedSync', true);
     } else {
-      await this.fetchContributions({ page: { size: 30 } });
+      await this.fetchContributions({ page: { size: 40 } });
     }
 
+    await this.updateMissingHistoricContributionsCount();
+
     return Promise.resolve();
   },
 
+  async updateMissingHistoricContributionsCount () {
+    const contributionsCount = await this.kredits.Contribution.count;
+    this.set('missingHistoricContributionsCount', contributionsCount - this.contributions.length);
+    console.debug(`Missing ${this.missingHistoricContributionsCount} historic contributions (out of ${contributionsCount} overall)`)
+  },
+
   addContributor (attributes) {
     if (attributes.github_uid) {
       const uidInt = parseInt(attributes.github_uid);
@@ -371,11 +381,12 @@ export default Service.extend({
   syncContributions: task(function * () {
     yield this.fetchNewContributions.perform();
     yield this.syncUnconfirmedContributions.perform();
+    yield this.updateMissingHistoricContributionsCount();
     this.set('contributionsNeedSync', false);
   }).group('contributionTasks'),
 
   fetchNewContributions: task(function * () {
-    const count = yield this.kredits.Contribution.functions.contributionsCount();
+    const count = yield this.kredits.Contribution.count;
     const lastKnownContributionId = Math.max.apply(null, this.contributions.mapBy('id'));
     const toFetch = count - lastKnownContributionId;
 
@@ -392,7 +403,7 @@ export default Service.extend({
   }),
 
   fetchMissingContributions: task(function * () {
-    const count = yield this.kredits.Contribution.functions.contributionsCount();
+    const count = yield this.kredits.Contribution.count;
     const allIds = [...Array(count+1).keys()];
     allIds.shift(); // remove first item, which is 0
     const loadedContributions = new Set(this.contributions.mapBy('id'));
diff --git a/app/templates/dashboard.hbs b/app/templates/dashboard.hbs
index 0235455..4f16575 100644
--- a/app/templates/dashboard.hbs
+++ b/app/templates/dashboard.hbs
@@ -105,6 +105,32 @@
                           @showQuickFilter={{this.showQuickFilterConfirmed}} />
       </div>
     </section>
+
+    {{#if this.showFullContributionSync}}
+    <section id="sync-all-contributions">
+      {{#if this.kredits.fetchMissingContributions.isIdle}}
+        <p style="margin-bottom: 1rem;">
+          There are
+          <strong>{{this.kredits.missingHistoricContributionsCount}}</strong>
+          contributions, which are not currently loaded/displayed.
+        </p>
+        <p>
+          You can fetch all historic data in one go, and have it stored locally in
+          your browser:
+          <button type="button" {{on "click" (perform this.kredits.fetchMissingContributions)}} class="small">
+            fetch all data
+          </button>
+        </p>
+      {{else}}
+        <p style="margin-bottom: 1rem;">
+          Syncing data. Please be patient...
+        </p>
+        <p>
+          (You can leave this website anytime and sync missing data when you come back.)
+        </p>
+      {{/if}}
+    </section>
+    {{/if}}
   </div>
 
   <div id="details">